It's an interesting topic, especially as much of what we play is stored either online, or in databases electronically. But what about keeping a notebook, or set of notebooks divided into different topics. Apparently super GM Yasser Seirawan filled over 30 notebooks in his career. And top coaches from around the world suggest the use of a notebook in your chess study. Here's an excellent article on exactly that subject, from UK GM Nigel Davies.
So let's assume for a second that keeping a notebook is a good thing. What would or should your notebook contain? Davies seems to talk in terms of individually tailored chess wisdom, while Seirawan seems to prefer different themes specifically documented. I guess, in the end, it would be down to the individual, with some guidance from a stronger player or coach. I don't think there is anything wrong with making it whatever you want:
a series of games that have impressed you
positions that interest you or that have pushed your ideas of thinking
a record of your games and ideas and progress
strategic or positional ideas
things that interest you about chess ie history, news, biography etc
In fact, writing a blog is a bit like writing a journal. However, I must admit to missing using pen and paper, while a gain a shine to my fingertips from the typing.
Anyway, if you do keep a notebook or journal or diary about chess, please let me know.
This was a position I posted yesterday. It is white to play and win. The key idea is the pawn break f3-f4-f5 which will eventually clear the way for the f7 pawn to promote. So white wants to move the king, but to where, or does it make a difference? The winning move here is 1.Ke3. The idea is to head white's king to the defence of black's queen side pawn majority as well as clearing the way for the f-pawn to advance. 1.Ke4 is also possible, but it is far less easy, and will rely on a winning queen ending which can be a bit messy. After 1..b5 2.cxb5 Kxb5 white's king is well placed to cut off black's c-pawn so the f-pawn can already be moved.
3.f4 now leaves black's king having to fall back to stop immediate promotion, but that will leave the white king to grab the c-pawn, and then the game.
This would be a nice position to put in a notebook under the heading of pawn endings, with perhaps a breakthrough theme.